Chromosomal and genic mechanisms of reproductive isolation: the case of Suncus murinus

Autor:	Tatiana I. Axenovich, Pavel M. Borodin, Sen-ichi Oda, Margarita B. Rogatcheva, Antonina I. Zhelezova, Yurii S. Aulchenko, Irina A. Serova
Rok vydání:	2000
Předmět:	Genetics education.field_of_study biology Sterility Population Shrew Chromosome Zoology Karyotype Suncus Reproductive isolation biology.organism_classification biology.animal Animal Science and Zoology education Ecology Evolution Behavior and Systematics Hybrid
Zdroj:	Scopus-Elsevier ResearcherID
ISSN:	2190-3743 0001-7051
Popis:	In this paper we review the results of our studies on the relative contribution of chromosomal and genie divergence in the formation of reproductive isolation in the house musk shrew Suncus murinus (Linnaeus, 1766). We crossed two laboratory strains of S. murinus-. KAT (derived from a wild population of Kathmandu, Nepal) and SRI (Sri Lanka). The strains differed from each other by five Robertsonian fusions and variant chromosomes 7, X and Y. Despite their difference in karyotype, SRI and KAT shrews were able to hybridise in the laboratory and some of the offspring produced were fertile. However, many sterile males were found among the hybrids and the litter size of fertile hybrids was low. At the first glance this appears to be a good example of chromosome-mediated reproductive isolation. However, further analysis clearly demonstrated that chromosome divergence played a negligible (if any) role in either male sterility or the low fertility among the hybrid females.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d880d6b71b4f7f920427906b72bee1f https://doi.org/10.4098/at.arch.00-70 Zobrazit plný text záznamu